Enhancing Temperature-Optimized Ionic Liquid Electrolytes for High-Voltage, High-Energy Supercapacitors Utilizing Date Stone-Derived Carbon in Coin Cell Configuration

Abubakar Dahiru Shuaibu; Abdulmajid A. Mirghni; Syed Shaheen Shah; Yuda Prima Hardianto; Atif Saeed Alzahrani; Md Abdul Aziz

doi:10.1002/bte2.70005

Enhancing Temperature-Optimized Ionic Liquid Electrolytes for High-Voltage, High-Energy Supercapacitors Utilizing Date Stone-Derived Carbon in Coin Cell Configuration

Abubakar Dahiru Shuaibu
, Abdulmajid A. Mirghni
, Syed Shaheen Shah
, Yuda Prima Hardianto
, Atif Saeed Alzahrani^*
, Md Abdul Aziz^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

This study investigates the advancement of coin cell supercapacitors (SCs) for sustainable, high-performance energy storage by employing biomass-derived date stone activated carbon with various ionic liquid (IL) electrolytes at different temperatures. The research reveals that SCs demonstrate both pseudocapacitive and electrochemical double-layer characteristics. Among the tested ILs, 1-Butyl-3-methylimidazolium trifluoromethanesulfonate (BMIMOTf) emerges as the most effective, achieving an impressive energy density of 129.9 Wh kg⁻¹, a power density of 403.8 W kg⁻¹, and a specific capacitance of 103.9 F g⁻¹ at 0.5 A g⁻¹. After 5000 cycles, the supercapacitor utilizing BMIMOTf maintains 97.3% of its initial capacitance and exhibits a Coulombic efficiency approaching 100%. Additionally, temperature-dependent analyses from room temperature to 50°C reveal that higher temperatures boost the electrochemical performance of the SC, attributed to improved ionic conductivity. This research offers a more comprehensive understanding of how materials and electrolytes interact, emphasizing the capacity of BMIMOTf to foster innovations in eco-friendly energy storage solutions.

Original language	English
Article number	e70005
Journal	Battery Energy
Volume	4
Issue number	4
DOIs	https://doi.org/10.1002/bte2.70005
State	Published - Jul 2025

Bibliographical note

Publisher Copyright:
© 2025 The Author(s). Battery Energy published by Xijing University and John Wiley & Sons Australia, Ltd.

Keywords

biomass-derived carbon
coin cell
energy density
energy storage
ionic liquid
supercapacitor

ASJC Scopus subject areas

Energy (miscellaneous)
Renewable Energy, Sustainability and the Environment

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Cite this

@article{7a8def856e28479095e20d0ac5a6014c,

title = "Enhancing Temperature-Optimized Ionic Liquid Electrolytes for High-Voltage, High-Energy Supercapacitors Utilizing Date Stone-Derived Carbon in Coin Cell Configuration",

abstract = "This study investigates the advancement of coin cell supercapacitors (SCs) for sustainable, high-performance energy storage by employing biomass-derived date stone activated carbon with various ionic liquid (IL) electrolytes at different temperatures. The research reveals that SCs demonstrate both pseudocapacitive and electrochemical double-layer characteristics. Among the tested ILs, 1-Butyl-3-methylimidazolium trifluoromethanesulfonate (BMIMOTf) emerges as the most effective, achieving an impressive energy density of 129.9 Wh kg−1, a power density of 403.8 W kg−1, and a specific capacitance of 103.9 F g−1 at 0.5 A g−1. After 5000 cycles, the supercapacitor utilizing BMIMOTf maintains 97.3\% of its initial capacitance and exhibits a Coulombic efficiency approaching 100\%. Additionally, temperature-dependent analyses from room temperature to 50°C reveal that higher temperatures boost the electrochemical performance of the SC, attributed to improved ionic conductivity. This research offers a more comprehensive understanding of how materials and electrolytes interact, emphasizing the capacity of BMIMOTf to foster innovations in eco-friendly energy storage solutions.",

keywords = "biomass-derived carbon, coin cell, energy density, energy storage, ionic liquid, supercapacitor",

author = "Shuaibu, \{Abubakar Dahiru\} and Mirghni, \{Abdulmajid A.\} and Shah, \{Syed Shaheen\} and Hardianto, \{Yuda Prima\} and Alzahrani, \{Atif Saeed\} and Aziz, \{Md Abdul\}",

note = "Publisher Copyright: {\textcopyright} 2025 The Author(s). Battery Energy published by Xijing University and John Wiley \& Sons Australia, Ltd.",

year = "2025",

month = jul,

doi = "10.1002/bte2.70005",

language = "English",

volume = "4",

journal = "Battery Energy",

issn = "2768-1696",

publisher = "John Wiley and Sons Inc.",

number = "4",

}

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T1 - Enhancing Temperature-Optimized Ionic Liquid Electrolytes for High-Voltage, High-Energy Supercapacitors Utilizing Date Stone-Derived Carbon in Coin Cell Configuration

AU - Shuaibu, Abubakar Dahiru

AU - Mirghni, Abdulmajid A.

AU - Shah, Syed Shaheen

AU - Hardianto, Yuda Prima

AU - Alzahrani, Atif Saeed

AU - Aziz, Md Abdul

PY - 2025/7

Y1 - 2025/7

N2 - This study investigates the advancement of coin cell supercapacitors (SCs) for sustainable, high-performance energy storage by employing biomass-derived date stone activated carbon with various ionic liquid (IL) electrolytes at different temperatures. The research reveals that SCs demonstrate both pseudocapacitive and electrochemical double-layer characteristics. Among the tested ILs, 1-Butyl-3-methylimidazolium trifluoromethanesulfonate (BMIMOTf) emerges as the most effective, achieving an impressive energy density of 129.9 Wh kg−1, a power density of 403.8 W kg−1, and a specific capacitance of 103.9 F g−1 at 0.5 A g−1. After 5000 cycles, the supercapacitor utilizing BMIMOTf maintains 97.3% of its initial capacitance and exhibits a Coulombic efficiency approaching 100%. Additionally, temperature-dependent analyses from room temperature to 50°C reveal that higher temperatures boost the electrochemical performance of the SC, attributed to improved ionic conductivity. This research offers a more comprehensive understanding of how materials and electrolytes interact, emphasizing the capacity of BMIMOTf to foster innovations in eco-friendly energy storage solutions.

AB - This study investigates the advancement of coin cell supercapacitors (SCs) for sustainable, high-performance energy storage by employing biomass-derived date stone activated carbon with various ionic liquid (IL) electrolytes at different temperatures. The research reveals that SCs demonstrate both pseudocapacitive and electrochemical double-layer characteristics. Among the tested ILs, 1-Butyl-3-methylimidazolium trifluoromethanesulfonate (BMIMOTf) emerges as the most effective, achieving an impressive energy density of 129.9 Wh kg−1, a power density of 403.8 W kg−1, and a specific capacitance of 103.9 F g−1 at 0.5 A g−1. After 5000 cycles, the supercapacitor utilizing BMIMOTf maintains 97.3% of its initial capacitance and exhibits a Coulombic efficiency approaching 100%. Additionally, temperature-dependent analyses from room temperature to 50°C reveal that higher temperatures boost the electrochemical performance of the SC, attributed to improved ionic conductivity. This research offers a more comprehensive understanding of how materials and electrolytes interact, emphasizing the capacity of BMIMOTf to foster innovations in eco-friendly energy storage solutions.

KW - biomass-derived carbon

KW - coin cell

KW - energy density

KW - energy storage

KW - ionic liquid

KW - supercapacitor

UR - https://www.scopus.com/pages/publications/85219554800

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DO - 10.1002/bte2.70005

M3 - Article

AN - SCOPUS:85219554800

SN - 2768-1696

VL - 4

JO - Battery Energy

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ER -

Enhancing Temperature-Optimized Ionic Liquid Electrolytes for High-Voltage, High-Energy Supercapacitors Utilizing Date Stone-Derived Carbon in Coin Cell Configuration

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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